Press-mold for glass.



No. M 82. Patented May l, I900.

1.. A. BAGSDALE. 1 PRESS MOLD FOB GLASS. 6

(Application filed. Jan. 14, 1699. Renewed Sept. 13, 1899.) V I (No Model.) 3 sheets-Sheet l.

' 4 I v w J16, WITNESSES:.

A TTOHNE r.

No. 648,882. Patentedflay l, I900.-

L. A. RAGS DALE.

PRESS MOLD FUR GLASS.

(Application filed Jan. 14, 1899. Renpwed Sept. 13, $99.)

(No Model.) 3 Sheets-She et 2.

WITNESSES v I I w INVENTOI? flaw/a B) ATTOHNE 'No. 648,882. v Patented May I; 1900. L. A. RAGSDALE.

PRESS MOLD FOR GLASS.

(Application filed Jun. 14, 1899. Renewed Sept. 13, 1899.)

3 Sheets-Sheet 3.

(No Model.)

I 1/ i Z,

l i H w J I A TTOHNE Y.

fitter Q FEW' O K a rz 2-2.5PtaeJMeL r-ot: S- g f SPECIFICATION forming parto'fietters Patent NO. 648,882'ydated may '1, 1900; i 3

I Application and illu inates. Renew'eq'se enitr13.11 99. .s rianavsopy'z. Qidmodel.) v 5 The whom it may concerm: Below the base-plateandpreferably intee it known that I, LEWIS AiRnesnanma gral therewith isacasing' or housing I), which. citizen of, the :United States, residing at New; contains thecore, the plunger, landthe pin- York city, inthe State of New York,-hav e in ions-on the core; At the lore: end of. the cas- 5 vented certainnew and usefullmprovements. 'ing isia concentric recessqintowhich isfitin'Press-Molds for Glass ;7. and I'do hereby de-i ted an annular steel bushing d, secured theroclare the following to bee full, clear, and exin by set-screws c, only oneof which is shown, act description of'theinvention, 'suchas will or by any; otherxwelhknown.meansgfor the enable othersskilled in the art to-whichzit purpose. ,The upper eud of the bushing exis aplnertai'ns,tofmake and use-the same. 1- tends into the central openingfinthe casing ,Myinvention rel tes to press -,molds for and forms a support for'lthe pinion g, which glass, has especial reference to melds forl reststhereomand the,bushing--;.isjinternally making glass screw-threaded caps for jars screw threaded t h.to engage a correspondand bottle's'yand hasfor its object theerad-i ing; screw-thread ql; on. the core .13,- by which 15 cation of orizzles' ortheir reduction to the the coreisraised andllowered in the casing minimum. and t he, manufacture ef perfect through the medium of the master gear-wheel caps; and it consi'stsin certain improvements- 7 c and leveri, as is required in the operation in construction,which vill'befrrlly disclosed ofthe mold.

in the following specification and claims. 'In 3 .Tl1e1owerendof thecasiugisprovided with co'thefmanufacture of this class of articles aj a.projection'm, ;which fillsthe recess 17. in the very large percentage of thecaps produced upper face'of the upper, or'ringsection o of" by the present form of molds. are defective Y the horizontally-separable mold O-and serves in that they are crizzlediorpermeated with toguide and retain -tl1e.coif.e B in properfrefine or'incipient cracks, which admit air and lation to the mold, whilethatpart of the lower 5 frequently enlarge after being put into use. end of the bushing 11 whichengages the-bot- 73 It has been my purpose to overcome thissetom of recess 11. preventsathe formation of a rio'usobstacle to the manufacture-of screw-- fin around. ,thecap :the bearingeface-of the threaded-glass caps, andthe practical use of cap being formed by the shoulder-1) on the the mold which constitutes the subject-mat core and the overhanging part-q of the bush ter'of this invention has demonstrated that ing (1, asshown in Fig. 4. :Theuppersection 8o it eliminatesall objections and produces a 0 is alsoprovidedwith a concentric opening perfect cap. I i 1 rywhich, with the-cavitys in the loweror .In the accompanying-drawings, which form plate section of the-mold, is ofthe contour part of this specification, Figure 1 represents ofthe exterior of the cap to-be molded. The

' 3 5 a side elevation of my improved" mold; Fig. sections 0 sare easily separable and are prov52, a top plan view, of the same; Fig. 3, an invided, respectively,with a-projection t and a verted horizontal plan online 3, FigJ1. Fig. recess a, avshoul derm and a scatrw, asshown Y i is a vertical section showing. the part-son a in said figure, and each section has a handle greatly-enlarged scale, and Fig. 5 is a verti c b, as shown in Figs. 1 and 2,, by which the 49 cal section of the core and its plunger. mold is placed in position and removed. o

Reference being had to the drawings and The lowerendof the core Bis p 'ovidedwith the letters thereon, Ain dicates the base-plate, a screw-thread c, which, withv the bodyd, is which is designed to be attached to .the pr'es sof the contour of the inner surface or interior p'l'ateof any-approved form of lever and spring of the cap. The core is hollow and contains 5 operated press by bolts (not shown) passing avertically-movablei plunger D,.whioh'forms' 5 through the holes a o o. in the base-plate; averyimportant part of my invention in pre- (Shown in Fig. 2.) ventingcrizzling o'fthe glass; The plun- I As the press forms no part of my present ger operates ina chamberein the lewerend invention, it has not been'decmed necessary of the core, is of alengthin excess 01: the so to illustrate any part thereofi f length of the plunger, and when 'lrmvnupto [00,

- threaded caps.

,plunger extends I in contact With-the lower its sea-tf forms a chamber 9 in the core-bee; low the plunger, as shown in 'Fig'. 5, which becomes a receptacle, for glass in the first stage of the operation of making glass screwfirom the upper end of the rod h, screw-threaded at 'i and passing through the opening it in the centering-plate Z, which may be secured thereto by screws m, and on the screw-threaded part c" is a nut n which is adjusted thereon to limit tlievupstroke of the plunger by coming I side of the centering-plate Z, and thereby regulates the capacity of the chamber 9 and the quantity of glass that can enter the chamber. I I I "At the upper end of the rod h'is a head E,

designed to'be secured to the plunger of the glass-press in any suitable manner, and the head-is screwed on the rod bya jam-nut 0'. The pinion g engages'a neck 12' on the core B and is secured thereon by a cotter-pin q, and the master-wheel k engages'a; stud 0! pin 7 'r on the bracket 8? of the casing b'."

The operation is as follows The base-plate A and the head E having been {secured to. a glass-press in themanner described, glass in suitable bulk is dropped into the mold 0.

The press-plate is then drawn down by the press-lever, carrying with it the'casing b' and itscontained parts, the lever Z by being thrown to the right projecting the screw-threaded the screw-threaded portion of ;.the core into the cavity. of the mold G, the plunger --D being'raised to the extent ofits stroke in chgmbere by the springs on, the press, which permits the. glass, to flowinto chamber to prevent it flowing over theupper edge of the mold by displacement while the core is entering the mold; The core hair?" ing entered the mold and 'the projection-{m ger D is then pressed down by th' I one movement of the'press lever-and thq'glassforced out of chamber 9' into the mold aronndl portion of are core and the cap formed. The coreisthen withdrawn from the mold by throwing th'e leverl to theleft,- theplungerD remaining down; The'ope 1- orator then throws the press-lever up,"'a'nd with its initial movement thesprings of the press draw the plunger D intothe recess 31; The furtherupward lever, raises the casing b and its partsjabove and free from the mold O. 'lhe lever l is then thrown to ,the right to raise the core, when the oif-bearerseizes the handles of the two sections of the mold and draws them I from under the press and discharges the cap by raising the upper'section o from the sec tion 8 and inverting the former section, thus Should there be an excess of delivering the cap on its seat or open end.

glass in the mold, it will form an increased thickness of the cap, which can do no harm. I

j The radical distinction between the opera-. tion of tho present form of molds, in which I I I -.place'j,theglassan'd fill the having been seated in the recess iaathe'plun-i ,f

. -continu-.i

zoiitally and' the {projection engaging said recess, 1 movable-hollow'core having the tically'mcvable plunger. in

movement-of the pres'sw 'tically-in ovable hollow core,

the screw-thread on a plunger is revolved-i i the molten glass, and the present form, in;

described my-invention,

having the external contour of-vthe'article to be produced, in combination with a hollow core having the internal contour of said article, provided with an external screwthread by means of which the core is lifted, a glass displacing plungcrwithiu the core,and means for revolving the core.

2. In a glass-mold, a'receptacle for glass having the external contour of the article tobe-produced and separable horizontally, in combination with a core having a coarse external screw-thread at its lower end, and an external screw-thread by which the core is lifted, a reciprocatoryglass-displacing plungerwithin the core, andmeans for revolving the core. I

3, In a glass-mold, a receptacle for glass having the external contour of the article to be produced, in combination with a hollow cle, provided with an external screw-thread "which the core is projected into the mold cforehaving the internal contourof thoartt' by-which the core is .lift'ed,'a reciprocatory plunger within and constructed'to be drawn lintofthe core forming a chamber for molten glass in the lower end of, the core and to be projected-beyond the end or the core to dismold, and means evolving the core.

mold having the external contour of thea'r'ti'cle to be produced, separable horiupper section having a reface, in combination with a a verticallyinternal concess in itsnpper tour ofthefarticle, provided with an external .screwthrcad by which the core is lifted, a ver- I the c'or'e,and means for-revolving the core. l

i 5;- A glass-mold,- in cjombinationwith a vcra vertically-movable plunger in the core, and an inclosing casing in which the core is supported.

I G. A glass-m0ld, in combination with a vertically-movable hollow core, a casing having a base-plate, and a vertically-movable plungerin the core having a rod extending through the base-plate and provided with means for regulating the stroke of the plunger. 7. A glass-mold, in combination with avertically-movable hollow core externally screwthreaded,a casing end and an internal screw-thread at the op.- posite end, and a vertically-movable plunger having a base-plate at one V ternallyscrew-threa.ded core, a. verticallymovable plunger and an inclosing casing provided with a, removable intorn'ally-screwthreaded bushin 5 pinion 011 said core and amaster gear-wheel.

In testimony whereof I affix my signature in presence of two-witnesses.

LEWIS A. RAGSDALE.

ICL

- Witnesses:

' JNo. O.HALCE,

RAGSDALE'. 1 

